package com.qk.interceptor;

import com.qk.utils.JwtUtils;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;

@Slf4j
@Component
public class TokenInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

        //1.获取请求路径
        String path_uri =request.getRequestURI();//  /login

        //2. 判定是否是登录请求，，如果是，放行
        if (path_uri.contains("/login")){
            log.info("登录请求:{},放行",path_uri);
            return true;
        }

        //3，获取请求头 token
        String jwt=request.getHeader("token");

        //4，判断token是否存在，如果不在，响应401状态码
        if (jwt==null || jwt.isEmpty()){
            log.info("请求头token不存在");
            response.setStatus(401);
            return false;
        }

        //5，解析令牌，如果解析令牌报错，响应401状态码
        try {
            JwtUtils.parseToken(jwt);
        } catch (Exception e) {
            log.info("令牌解析失败");
            response.setStatus(401);
            return false;
        }


        //6.放行
        return true;
    }
}
